Proceedings of the Royal Society of Queensland . Pboc Roy. Soc Q land. Vol. x. S-te 5U &6 86 7cJo = % FOR / » I6OOO UBS^ PER sq inch. 310 = ^ FOR/ 64000 LBSPER SO INCH- BY R. W. H. HAWKEX. 107 P 1 + -25 - p 71 q sec y/ = q 2 p1 q the error of which is negligible, but it is more conclusiveand just as easy to use the secant curve, consequently allthe curves and data have been deduced on the latter basis. As shewn in the previous paper this does not cause anything like f .20% difference i:i results for - P q It is apparent that is the sum of a Geometrical Progression, P1 q •so that Induced Deflec
Proceedings of the Royal Society of Queensland . Pboc Roy. Soc Q land. Vol. x. S-te 5U &6 86 7cJo = % FOR / » I6OOO UBS^ PER sq inch. 310 = ^ FOR/ 64000 LBSPER SO INCH- BY R. W. H. HAWKEX. 107 P 1 + -25 - p 71 q sec y/ = q 2 p1 q the error of which is negligible, but it is more conclusiveand just as easy to use the secant curve, consequently allthe curves and data have been deduced on the latter basis. As shewn in the previous paper this does not cause anything like f .20% difference i:i results for - P q It is apparent that is the sum of a Geometrical Progression, P1 q •so that Induced Deflection p f p = l-25x-^ 1 + -4 Eccentricity oi Loading q [ q which is easily visualised. ©*?}?- THE AUSTRALIAN GELECHIANAE(LEPIDOPTERA). By A. Jefferis Turner, , (Bead before the Royal Society of Queensland, 29th October, 1919.) The Gelechianae are rather a difficult group, and Ihave only lately studied them seriously. With the helpof a small number of species named for me by Mr. Meyrick,but especially by the study of Mr. Meyricks admirablerevis
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